With Predators forward prospect Filip Forsberg, there’s the obvious. He was the captain of Sweden’s world junior team this past year. He notched 33 points in 38 games for Leksand, his team in Allsvenskan. He’s listed at 6-foot-1, 186 pounds. But as with any young prospect, there’s also an unknown factor about Forsberg, who is expected to make his NHL debut today against the Detroit Red Wings.